Driving mechanism for printing presses



u 2 A g I H. M. BARBER DRIVING MECHANISM FOR PRINTING PRESSES Filed Feb. 20. 1926 INVENTOR I 7% m ATTORNEYS Patented Aug. 2, 1927.

UNITED ES.

HOWARD M-.-BARBRR, or wEs'rERLY, RHODE ISLAND; AssIGNoR Too.- 1;. corrR L'Laz sons COMPANY, or'wEsrRRLY, RHonE ISLAND, A CORPORATION or DELAWARE.

DRIVING MECHANISM FOR rRmrruo rRn ssns.

Application filed February 20, less. Serial No. 39,686.

In web perfecting rotary printing presses and especially in multi-color printing presses it has been usual to connect the 1mpression cylinder of one of the printing.

; desirable vibration of'the parts and loss of rigidity, especially as the press is being started, when the starting torque is very high. Y

The object ofmy invention is to overcome this vibration and lack of rigidity by providing a primary drive located outside of the frame and a secondary drive located inside of the frame. In the present instance the primary drive'is located just outside the.

train of gears which connect the impression and plate cylinders of the first and second printing units and the secondary drive is placed just inside of the frame and includes a gear fast. on the impression cylinder of the second printing unit.

A practical embodiment of my invention is represented in the accompanying drawings, in which Fig. 1 represents in detail sideelevation so much of a multi-color web perfecting rotary printing press as will illustrate my improved driving mechanism therefor.

Fig. 2 represents a detail Vertical transverse section taken in the plane of the line IIII of Fig. 1, looking in the direction of the arrows.

The printing press frame is denoted by 1, within which frame are suitablymounted V the first and second printing units of a multi-color perfecting rotary printing press.

The impression cylinder of the first print-' ing unit is denoted by 2 and its shaft 3 has fast thereon a gear 4, located outside of the frame 1. This gear 4 meshes with the gears.

5 and 6 which are fast on the shafts 7 and 8 of the plate cylinders 9 and 10 of the first printing unit. This gear 4 is driven through the gears 11 and 12 fro-m the gear 13 which is fast on the shaft 14 of the impression cylinder 15 of the second printing unit. These gears 5. 6, 11, 12 and 13 are all located just outside of the frame 1. The

gear 13 mesheswith the gears 16, 17, 18 and 19' 'fast on the shafts 20, 21,22 and 23 of the plate cylinders '24, 25, 26, and 27' of the second printing unit. f l l The driving'mechanism'for the printing press comprises a'primary'drive'and a secondary drive. The primary drive comprises the driving gear 28 and its "drive-n gear 29 which are fast'on the. shafts 3O and'31*respectively, and located outside'oftheframe 1and'just outside of'thetrain of gears Which connect'the pii'mary'. and secondaryprinting units;

The secondary" anism comprises the driving enes and'its driven gear 33 which are fa st'on-the shaft 31 and impression cylinder 15'- respectively. These gears of the'secondary drive are located just inside of the frame 1. i a An auxiliary side frame 34 serves as' the outside mounting for the shafts 30 and 31A 7 The shaft 30 -may' be driven from any suitable source of'power, not shown herein,

through the longitudinal shaft 35 and=bev drive ofthe' driving mecheledgears36 and 37 which are fast on the shafts 35 and'30 respectively.

By locating the secondar drive of the driving mechanism just insi e of the frame,

I find that rigidity is assured even when the parts are subjected to the very high torque at the starting of the press, a feature which is, of course, of very great importance in this type of machinery.

It is evident that various changes may be resorted to in the construction, form and arrangement of the several parts without departing from the spirit and scope of my invention; hence, I do not intend to be limited to the particular embodiment herein shown and described, but r What I claim is 1. In a web perfecting rotary printing press, a suitable frame, two printing units, a geared connection between the two units located outside, of the frame, and a press driving mechanism comprising a primary drive located outside of the frame and a secondary drive located inside of the frame and including a driven gear fast on the impre'ssion cylinder of one of the said printing units.

'2. In a' web perfecting rotary'printing press,,a suitable frame, two printing-units, a geared connection between the two units driving mechanism comprising primary and of the frame and the secondary drive ineludingdriving and driven gears located in H side of thefranien 1 r 3. In a web perfecting rotary printing press, a suitable franiegtwo pr inting u-nits, a geared connectlon between the two units located outside of alarmist, ancliafpress driving mechanism comprising primary and secondary drives, the priinarydrive including driving and driven gears located outside of the frame and the secondary drive in cludingdriving anddriven gears located inside of the frame, thedriven gear of {the secondary drive being fast on the impression cylinder of one ofthe printing units.

fl. In a webfperfecti ng rotary printing press, a suitable frame, two printing units, ageare d connection between the two .lllllt-S located o utsideof the frame, a pressdriving vinechanisn rco nprislng prin' ary and secondary drives," the primary drive includ ing driving, and driven gears located outside of the frame and the secondary drive including driving and driven gears located in side of the frame, and a shaft passing through the frainehaving fast thereon the driven gear of the primary drivelaud the drivinggear of thesecondary drive.

5. In a web perfectingrotary printing press, a suitable frame, two printing units,

eluding driving and driven gears located in of i the frame and'just outside of the gear a geared connection between the two units located outside of the frame, a press driving l'neehanisni comprising primary and secondary drives, the primary drive including: drivingiand driven gears located Outside of: the frame and the 1 secondary drive inside-of the fran1e nhd a shaft passing through the frame having fast thereon the drivengearlof the prin'iary drive and the driving gear of the secondary drive, the driven gear of the secondary drive being fast on the impression cylinderof one-of the printingunits.

'6. Ina web perfecting rotary printing a press, a suitahle fralne, two printing units, 7 a geared connectioubetween the two units located outside of the frame, and a press driving mechanism comprising primary and secondary drives, the primary drive includ ing driving 'and driven gears located outside connection between the two printing units and the secondary: drive including driving and driven gears located just inside ofthe frame, the driven gearof the secondary drive being fast on the impression cylinder of one of the printing units. v

' In testimony that I claim the foregoing as my invention, I have signed my name this 18th day of February, 1926 "HOWARD M. BARBER. 

